Facebook is yet to be powered by Drupal. We won’t be surprised if they did migrate to Drupal anytime soon. Scalability and Flexibility are Drupal’s core strengths which blend easily with the requirements of a social networking website. Checkout out the top 5 Social networking websites powered by Drupal. You might also find our list of the Top 10 Government websites built with Drupal to be interesting. We are Drupal experts and we can easily help you build your very own Drupal social networking site. Contact us for a free consultation.